US 4,819,376 AGranted

Driving and guiding apparatus for a horizontally pivoted wing

AssigneeSilvelox S.p.A.

InventorSilvio Taddei

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Abstract

A driving and guiding apparatus for a counter-weighed horizontally pivoted wing, particularly for a garage door. The apparatus comprises a structure embedded in an opening that the wing is designed to close, two lateral vertical guides for the wing formed in the embedded structure, an articulation rod on each side and two lateral weight-carrying cables turning around a respective pulley. The apparatus also comprises a drive means for opening and closing the wing which includes a motor-driven transmission shaft which extends along the lintel of the opening in which the wing is mounted, a pinion mounted on each end of the transmission shaft and a toothed wheel mounted coaxially and rigid in rotation with each pulley. Each toothed wheel meshes with a respective pinion so that the rotation of the transmission shaft in one direction causes controlled unwinding of the cables, and thus the opening or lifting of the wing, and its rotation in the opposite direction causes its shutting or lowering.

Claims7

Dependent claims

A driving and guiding apparatus for a horizontally pivoted counterweighed wing arranged to close an opening provided with lintel portion, which apparatus comprises

a wingcarrying frame structure to be embedded in, or secured to, the opening the wing is designed to close, and having two side vertical guides therein,
an articulation rod on each side of the wing having one end linked to the said frame structure and its other end pivoted to a respective side of the wing,
a pin projecting from each side of the wing and slidably engaging a respective side vertical guide in the frame structure,
two lateral pulleys mounted for rotation on said frame structure, each having a respective cable turning around it, one end of the cable being secured to a respective side of said wing at a intermediate position between the pivoted end of the respective articulation rod and the projecting pin thereof, and its other end carrying a respective counterweight, and
a drive means equipped with reversible motor means for synchronized rotation of said pulleys in either direction, the rotation of said pulleys in one direction resulting in controlled unwinding of said cables and thus the lowering of the counterweights and the opening or lifting of the wing and their rotation in the opposite direction resulting in raising of the counterweights and closing or lowering, of the wing.

2 more elements

Dependencies are inferred from the claim text.